• Title/Summary/Keyword: advanced materials

Search Result 11,355, Processing Time 0.044 seconds

Nonlinear Optical Polymers Possessing Thermal and Temporal Stability: Potentials and Prospect

  • Kim, Dong-Wook;Ju, Hyun-Kyung;Ahn, Soo-Mi;Yoon, Sung-Cheol;Lim, Jong-Sun;Park, Seung-Ku;Lee, Chang-Jin
    • Proceedings of the Polymer Society of Korea Conference
    • /
    • 2006.10a
    • /
    • pp.165-165
    • /
    • 2006

  • We prepared nonlinear optical (NLO) polymers possessing thermal and temporal stability, which were based on the polyimides appended with NLO chromophores. NLO chromophores with a terminal hydroxyl group have been synthesized by coupling between aminobenzene or julolidine donor and phenylene bridge, and then subsequent coupling between the resulting product and tricyanofuran acceptor. The chromophores were chemically bonded to the polyimides backbone through Mitsunobu reaction. The NLO polymers showed $160-170^{\circ}C$ of Tgs and were thermally stable up to $200^{\circ}C$. We obtained optical quality films by spincoating and evaluated their electro-optical properties and temporal stability.

  • PDF

Fabrication of Carbon Nanotubes Monolayer Film using Liquid/Liquid Interface

  • Matsui, Jun;Yamamoto, Kohei;Inokuma, Nobuhiro;Orikasa, Hironori;Kyotani, Takashi;Miyashita, Tokuji
    • Proceedings of the Polymer Society of Korea Conference
    • /
    • 2006.10a
    • /
    • pp.279-279
    • /
    • 2006

  • We report a fabrication of carbon nanotube (CNT) monolayer thin film using liquid-liquid interface. The multiwalled carbon nanotube (MWCNT), which were synthesized by the alumina template method formed a monolayer at the liquid-liquid interface after sonicating the MWCNT water-oil dispersion. Moreover, with the addition of ethanol, the MWCNT monlayer was also formed at the liquid-liquid interface. The monolayer is transferable onto solid substrates and the transferred film was observed using atomic force microscopy (AFM)

  • PDF